mesothorax

noun
me·​so·​tho·​rax | \-ˈthȯr-ˌaks \

Definition of mesothorax 

: the middle of the three segments of the thorax of an insect — see insect illustration

First Known Use of mesothorax

circa 1826, in the meaning defined above

History and Etymology for mesothorax

New Latin

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The first known use of mesothorax was circa 1826

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